Added start of the transformed point functions

Author: photonstorm

v3/src/checksum.js

@@ -1,4 +1,4 @@
 var CHECKSUM = {
-build: '214dcc80-5097-11e7-9900-0395e9b33639'
+build: '927d4eb0-509e-11e7-8474-0fbd363270fe'
 };
 module.exports = CHECKSUM;

v3/src/input/GlobalInputManager.js

@@ -4,6 +4,9 @@ var Keyboard = require('./keyboard/KeyboardManager');
 var Mouse = require('./mouse/MouseManager');
 var MouseEvent = require('./mouse/events/');
 var EventDispatcher = require('../events/EventDispatcher');
+var GetTransformedPoint = require('./components/GetTransformedPoint');
+var PointWithinGameObject = require('./components/PointWithinGameObject');
+var TransformMatrix = require('../components/TransformMatrix');
 
 var GlobalInputManager = function (game, gameConfig)
 {
@@ -21,6 +24,9 @@ var GlobalInputManager = function (game, gameConfig)
     //  Listeners
     this.keyboard = new Keyboard(this);
     this.mouse = new Mouse(this);
+
+    this._tempMatrix = new TransformMatrix();
+    this._tempPoint = { x: 0, y: 0 };
 };
 
 GlobalInputManager.prototype.constructor = GlobalInputManager;
@@ -75,6 +81,16 @@ GlobalInputManager.prototype = {
                     break;
             }
         }
+    },
+
+    getTransformedPoint: function (gameObject, x, y)
+    {
+        return GetTransformedPoint(this._tempMatrix, gameObject, x, y, this._tempPoint);
+    },
+
+    pointWithinGameObject: function (gameObject, x, y)
+    {
+        return PointWithinGameObject(gameObject, x, y);
     }
 
 };

v3/src/input/components/GetTransformedPoint.js

@@ -0,0 +1,30 @@
+/**
+* This will return the local coordinates of the specified displayObject based on the given Pointer.
+*
+* @method Phaser.Input#getLocalPosition
+* @param {Phaser.Sprite|Phaser.Image} gameObject - The DisplayObject to get the local coordinates for.
+* @param {Phaser.Pointer} pointer - The Pointer to use in the check against the gameObject.
+* @return {Phaser.Point} A point containing the coordinates of the Pointer position relative to the DisplayObject.
+*/
+var GetTransformedPoint = function (matrix, gameObject, x, y, output)
+{
+    if (output === undefined) { output = { x: 0, y: 0 }; }
+
+    matrix.applyITRS(gameObject.x, gameObject.y, gameObject.rotation, gameObject.scaleX, gameObject.scaleY);
+
+    var a = matrix.matrix[0];
+    var b = matrix.matrix[1];
+    var c = matrix.matrix[2];
+    var d = matrix.matrix[3];
+    var tx = matrix.matrix[4];
+    var ty = matrix.matrix[5];
+
+    var id = 1 / (a * d + c * -b);
+
+    output.x = d * id * x + -c * id * y + (ty * c - tx * d) * id;
+    output.y = a * id * y + -b * id * x + (-ty * a + tx * b) * id;
+
+    return output;
+};
+
+module.exports = GetTransformedPoint;

v3/src/input/components/PointWithinGameObject.js

@@ -0,0 +1,14 @@
+//  x/y MUST be translated before being passed to this function, unless the gameObject is guarnateed to
+//  be not rotated or scaled in any way
+
+var PointWithinGameObject = function (gameObject, x, y)
+{
+    var width = gameObject.width;
+    var height = gameObject.height;
+    var x1 = -width * gameObject.originX;
+    var y1 = -height * gameObject.originY;
+
+    return (x >= x1 && x < x1 + width && y >= y1 && y < y1 + height);
+};
+
+module.exports = PointWithinGameObject;